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Flat tyre
Flat tyre equipment variants
Your vehicle may be equipped with:
Preparing the vehicle
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Vehicle preparation is not necessary on vehicles with MOE tyres*.
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Stop your vehicle as far away from traffic as possible on solid, non-slippery, level ground.
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Switch on the hazard warning lamps.
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Firmly depress the parking brake.
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Move the selector lever to P.
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All occupants must get out of the vehicle. Make sure that they are not endangered as they do so.
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Make sure that no one is near the danger area whilst a wheel is being changed. Anyone who is not directly assisting in the wheel change should, for example, stand behind the barrier.
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Switch off the engine.
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Remove the key from the ignition lock.
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Place the warning triangle more or warning lamps at a suitable distance. Observe legal requirements.
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 | Risk of injury |
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The jack is designed only to raise the vehicle for a short time while a wheel is being changed.
The vehicle must be placed on stands if you intend to work under it.
Make sure that the jack is placed on a firm, non-slip, level surface. Do not use wooden blocks or similar items as jacking supports. Otherwise, the jack will not be able to achieve its load-bearing capacity due to the restricted height.
Do not start the engine at any time while the wheel is being changed.
Do not lie under the vehicle when it is being supported by the jack. If you do not raise the vehicle as described, it could slip off the jack (e.g. if the engine is started or a door or the boot lid is opened or closed) and you could be seriously injured.
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Using the TIREFIT kit
You can use the
TIREFIT kit to seal small punctures, particularly those in the tyre tread. You
can use TIREFIT in outdoor temperatures down to -20 °C.
| Risk of accident |
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In the following situations, your safety is at particular risk and TIREFIT is unable to provide breakdown assistance:
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if there are cuts or punctures in the tyre greater than 4 mm
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if the wheel rim is damaged
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if you have driven at very low tyre pressures or on a flat tyre
Do not drive any further. Consult a qualified specialist workshop which has the necessary specialist knowledge and tools to carry out the work required.
Mercedes-Benz recommends that you use a Mercedes-Benz Service Centre for this purpose. In particular, work relevant to safety or on safety-related systems must be carried out at a qualified specialist workshop.
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Do not remove any
foreign objects which have penetrated the tyre, e.g. screws or nails.
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Remove TIREFIT, the
accompanying "max. 80 km/h" sticker and the electric air
pump from the stowage well underneath the boot floor
more.
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 | Driver's field of vision
sticker |
 | Wheel
sticker |
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| Risk of injury |
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TIREFIT must not come into contact with your skin, eyes or clothing.
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If TIREFIT comes into contact with your eyes or skin, immediately rinse thoroughly with clean water.
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Change out of clothing which has come into contact with TIREFIT immediately.
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If an allergic reaction occurs, consult a doctor immediately.
Keep TIREFIT away from children.
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If TIREFIT is swallowed, immediately rinse your mouth out thoroughly with water and drink plenty of water.
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Do not induce vomiting. Consult a doctor immediately.
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Do not inhale TIREFIT fumes.
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If TIREFIT leaks
out, allow it to dry. It can then be removed like a layer of film.
If you get TIREFIT
on your clothing, have it cleaned as soon as possible with
perchloroethylene.
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| Risk of injury |
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Comply with the manufacturer's safety instructions shown on the sticker on the electric air pump.
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Your
vehicle may be equipped with one of two different air pumps. Version 1 can be
identified by the flap, behind which the hose with the pressure gauge and cable
are located; version 2 has a pressure gauge integrated in the electric air
pump.
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Version
1
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| TIREFIT sealant filler
bottle |
| Flap |
 | Recess |
 | On/off switch |
 | Electric connector with
cable |
 | Air pump hose |
 | Flange |
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Version
1
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Remove the cap from
valve  on the
faulty tyre.
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 | Pressure release
screw |
 | Pressure
gauge |
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Insert
plug into
the socket of the cigarette lighter* more or into a 12V power socket in your vehicle
more.
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Turn the key to
position 1 more in the ignition lock.
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Press on/off switch
on the electric
air pump to I.
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The electric air
pump is switched on. The tyre is inflated.
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First, TIREFIT is
pumped into the tyre. The pressure can briefly rise to around 5 bar.
Do not switch
off the electric pump during this phase.
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Let the electric
pump run for five minutes. The tyre should then have a pressure of at least
1.8 bar.
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Do not operate the electric air pump for longer than six minutes without a break. Otherwise, it may overheat.
The air pump can be operated again once it has cooled down.
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If a pressure of
1.8 bar is not reached after five minutes:
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Switch off and
disconnect the electric air pump and drive the vehicle forwards or backwards
approximately 10 m.
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This distributes
the TIREFIT more evenly.
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Remove TIREFIT
filler bottle
from the electric pump.
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Pump up the tyre
again.
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| Risk of accident |
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If a pressure of 1.8 bar is not achieved after five minutes, the tyre is too badly damaged.
Do not drive any further. Consult a qualified specialist workshop which has the necessary specialist knowledge and tools to carry out the work required. Mercedes-Benz recommends that you use a Mercedes-Benz Service Centre for this purpose. In particular, work relevant to safety or on safety-related systems must be carried out at a qualified specialist workshop.
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If a tyre pressure
of 1.8 bar is reached:
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Press on/off switch
on the electric
air pump to 0.
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The electric air
pump is switched off.
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Disconnect the
electric air pump and stow it away.
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Fold up the warning
triangle and stow it away.
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Pull away
immediately.
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This distributes
the TIREFIT more evenly around the tyre.
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Stop after driving
for approximately ten minutes and check the tyre pressure with the electric air
pump.
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| Risk of accident |
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If the tyre pressure is now lower than 1.3 bar, the tyre is too badly damaged. Do not drive any further. Consult a qualified specialist workshop which has the necessary specialist knowledge and tools to carry out the work required. Mercedes-Benz recommends that you use a Mercedes-Benz Service Centre for this purpose. In particular, work relevant to safety or on safety-related systems must be carried out at a qualified specialist workshop.
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If the tyre
pressure is still at least 1.3 bar, correct it (see fuel filler flap for
values).
To
increase the tyre pressure: switch on the electric air pump.
To reduce the
tyre pressure: open pressure release screw
on pressure
gauge .
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Drive to the
nearest workshop and have the tyre changed there.
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Have the TIREFIT
kit replaced as soon as possible at a qualified specialist workshop, e.g. at a
Mercedes-Benz Service Centre.
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| Risk of accident |
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Do not exceed the
maximum speed of 80 km/h.
The "max.
80 km/h" sticker must be affixed within the driver's field
of vision.
The
vehicle's handling characteristics may be affected.
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 | Environmental note |
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Have the used TIREFIT kit disposed of professionally, e.g. at a Mercedes-Benz Service Centre.
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Have the TIREFIT
kit replaced every four years at a qualified specialist workshop, e.g. a
Mercedes-Benz Service Centre.
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Version
2
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| TIREFIT sealant filler
bottle |
| Recess |
| On/off switch |
| Electric connector with
cable |
| Air pump hose |
| Flange |
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Insert
plug into
the socket of the cigarette lighter* more or into a 12V power socket in your vehicle
more.
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Turn the key to
position 1 more in the ignition lock.
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Press on/off switch
on the electric
air pump to I.
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The electric air
pump is switched on. The tyre is inflated.
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First, TIREFIT is
pumped into the tyre. The pressure can briefly rise to around 5 bar.
Do not switch
off the electric pump during this phase.
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Let the electric
pump run for five minutes. The tyre should then have a pressure of at least
1.8 bar.
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Do not operate the electric air pump for longer than six minutes without a break. Otherwise, it may overheat.
The air pump can be operated again once it has cooled down.
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If a pressure of
1.8 bar is not reached after five minutes:
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Switch off and
disconnect the electric air pump and drive the vehicle forwards or backwards
approximately 10 m.
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This distributes
the TIREFIT more evenly.
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Remove TIREFIT
filler bottle
from the electric pump.
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Pump up the tyre
again.
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| Risk of accident |
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If a pressure of 1.8 bar is not achieved after five minutes, the tyre is too badly damaged.
Do not drive any further. Consult a qualified specialist workshop which has the necessary specialist knowledge and tools to carry out the work required. Mercedes-Benz recommends that you use a Mercedes-Benz Service Centre for this purpose. In particular, work relevant to safety or on safety-related systems must be carried out at a qualified specialist workshop.
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If a tyre pressure
of 1.8 bar is reached:
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Press on/off switch
on the electric
air pump to 0.
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The electric air
pump is switched off.
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Disconnect the
electric air pump and stow it away.
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Fold up the warning
triangle and stow it away.
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Pull away
immediately.
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This distributes
the TIREFIT more evenly around the tyre.
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Stop after driving
for approximately ten minutes and check the tyre pressure with the electric air
pump.
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| Risk of accident |
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If the tyre pressure is now lower than 1.3 bar, the tyre is too badly damaged. Do not drive any further. Consult a qualified specialist workshop which has the necessary specialist knowledge and tools to carry out the work required. Mercedes-Benz recommends that you use a Mercedes-Benz Service Centre for this purpose. In particular, work relevant to safety or on safety-related systems must be carried out at a qualified specialist workshop.
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| Pressure release
button |
| Pressure
gauge |
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If the tyre
pressure is still at least 1.3 bar, correct it (see fuel filler flap for
values).
To
increase the tyre pressure: switch on the electric air pump.
To reduce the
tyre pressure: press yellow pressure release button
next to pressure
gauge .
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Drive to the
nearest workshop and have the tyre changed there.
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Have the TIREFIT
kit replaced as soon as possible at a qualified specialist workshop, e.g. at a
Mercedes-Benz Service Centre.
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| Risk of accident |
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Do not exceed the
maximum speed of 80 km/h.
The "max.
80 km/h" sticker must be affixed within the driver's field
of vision.
The
vehicle's handling characteristics may be affected.
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| Environmental note |
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Have the used TIREFIT kit disposed of professionally, e.g. at a Mercedes-Benz Service Centre.
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Have the TIREFIT
kit replaced every four years at a qualified specialist workshop, e.g. a
Mercedes-Benz Service
Centre.
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Changing a wheel and fitting the spare wheel*
| Risk of accident |
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The wheel dimensions and tyre size of the spare wheel*, the emergency spare wheel* and standard wheels may differ from one another.
Your vehicle's handling characteristics will change when a "Minispare" emergency spare wheel* is fitted. Adapt your style of driving accordingly.
The "Minispare" emergency spare wheel* may only be used for a short time. Do not exceed the maximum speed of 80 km/h and do not deactivate ESP®.
Never drive the vehicle with more than one "Minispare" emergency spare wheel* fitted.
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| Risk of accident |
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Have the "Minispare" emergency spare wheel* or the spare wheel* replaced with a new wheel as soon as possible at a qualified specialist workshop which has the necessary specialist knowledge and tools to carry out the work required. Mercedes-Benz recommends that you use a Mercedes-Benz Service Centre for this purpose. In particular, work relevant to safety or on safety-related systems must be carried out at a qualified specialist workshop.
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Preparing the
vehicle
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Prepare the vehicle
as described
more.
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Place the wheels in
the straight-ahead position.
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Take the following
from the stowage well beneath the boot floor:
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Secure the vehicle
to prevent it from rolling away.
On level
ground: place chocks or similar under the front and rear of the wheel that
is diagonally opposite the wheel you wish to
change.
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On downhill
gradients: place chocks or similar under both wheels of the other
axle.
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| Wheel
wrench |
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Using wheel wrench
, loosen the
bolts on the wheel you wish to change by about one full turn. Do not unscrew
the bolts completely.
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Raising the
vehicle
| Risk of accident |
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If you fail to position the jack correctly, the vehicle may:
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slip off the jack
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injure you or others
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be damaged
It is thus important to ensure that the jack is positioned correctly in the respective jacking points. Before positioning the jack, remove any dirt that may have collected in the jacking points.
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The jacking points for the jack are located behind the wheel
housings of the front wheels and in front of the wheel housings of the rear
wheels.
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| Centring
pin |
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In place of the
wheel bolt, screw centring pin from the vehicle tool kit into the
thread.
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Unscrew the
remaining wheel bolts fully.
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Do not place wheel bolts in sand or on a dirty surface. This could cause damage to the bolt and wheel hub threads.
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Remove the
wheel.
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Fitting a new
wheel
| Risk of accident |
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Replace damaged or corroded wheel bolts.
Never oil or grease wheel bolts.
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| Risk of accident |
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If a wheel hub thread is damaged, you must not drive the vehicle any further. Consult a qualified specialist workshop which has the necessary specialist knowledge and tools to carry out the work required. Mercedes-Benz recommends that you use a Mercedes-Benz Service Centre or Service 24h for this purpose. In particular, work relevant to safety or on safety-related systems must be carried out at a qualified specialist workshop.
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| Risk of accident |
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Only use wheel bolts that have been designed for the wheel and the vehicle. For safety reasons, Mercedes-Benz recommends that you only use wheel bolts which have been approved for Mercedes-Benz vehicles. Other bolts could work loose.
Do not tighten the wheel bolts completely while the vehicle is still jacked up. The vehicle could topple off the jack.
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Vehicles with
the "Minispare" spare wheel*: remove the container with
the wheel bolts from the spare wheel* or emergency spare wheel* and take out the
bolts.
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Use the bolts
supplied with the "Minispare" emergency spare wheel*.
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| Wheel bolts for 17" light-alloy
wheels |
| Wheel bolts for the "Minispare"
emergency spare wheel* |
| Wheel bolts for 18" light-alloy
wheels and larger |
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Wheel bolts
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Wheel bolts
can be found
together with the "Minispare" emergency spare wheel* (not with 17"
tyres).
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Clean the wheel and
wheel hub contact surfaces.
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Place the
"Minispare" emergency spare wheel* or the spare wheel onto the
centring pin and push it on.
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Tighten the wheel
bolts until they are finger-tight.
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Unscrew the
centring pin.
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Tighten the last
wheel bolt until it is finger-tight.
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Lowering the
vehicle
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Lower the vehicle.
To do this, turn the crank of the jack anti-clockwise until the vehicle is
standing firmly on the ground again.
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Place the jack to
one side.
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| Risk of accident |
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Have the tightening torque checked immediately after a wheel is changed. The wheels could work loose if they are not tightened to a torque of 150 Nm.
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Turn the jack back
to its initial position and store it and the rest of the vehicle tool kit in
the boot.
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When you are
driving with the "Minispare" emergency spare wheel* fitted, the tyre pressure loss
warning system cannot function reliably.
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MOExtended run-flat system*
The MOExtended run-flat system must only be used in conjunction with the tyre pressure loss warning system or the tyre pressure monitor.
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The maximum permissible distance which can be driven in run-flat mode depends on the load in the vehicle. It is 50 km if the vehicle is partially laden and 30 km if fully laden.
The maximum range that can be driven in emergency operation is measured from the point at which the pressure loss warning message appears in the multi-function display.
You must not exceed a maximum speed of 80 km/h.
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Vehicles featuring the MOExtended run-flat system are not equipped with the TIREFIT kit*.
It is therefore recommended to additionally equip your vehicle with the TIREFIT kit* when fitting tyres that do not feature run-flat properties, e.g. winter tyres.
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A TIREFIT kit* is available from any qualified specialist workshop, e.g. a Mercedes-Benz Service Centre.
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| Risk of accident |
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The handling characteristics of your vehicle deteriorate in run-flat mode, for example:
Adapt your driving style accordingly and avoid sudden changes in direction and sudden acceleration, as well as driving over obstacles (i.e. kerbs, potholes), and driving off-road. This is particularly the case when the vehicle is heavily laden.
The maximum permissible distance that can be driven in run-flat mode depends to a large extent on the loads placed on the vehicle. It can be shorter due to high speeds, a heavy load, sudden acceleration and/or manoeuvring, the road surface condition, outside temperature, etc., or further if you drive carefully and conservatively.
Do not continue to drive in run-flat mode if:
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you hear banging noises
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the vehicle starts to shake
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you see smoke and smell rubber
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ESP® is intervening constantly
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there are tears in the sidewalls of the tyre
After driving in run-flat mode, you must have the rims checked for damage at a qualified specialist workshop which has the necessary specialist knowledge and tools to carry out the work required. The faulty tyre must be replaced in every case.
Mercedes-Benz recommends that you use a Mercedes-Benz Service Centre for this purpose. In particular, work relevant to safety or on safety-related systems must be carried out at a qualified specialist workshop.
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On a vehicle with MOExtended tyres, only MOExtended spare tyres should be used. These must be of the size specified for the vehicle.
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